In the first garden “Not your will but mine” changed paradise to desert and brought man from Eden to Gethsemane.  Now “Not my will but yours” brings anguish to the man who prays it but transforms the desert into the kingdom and brings man from Gethsemane to the gates of glory.
– D.A. Carson

It is men’s ignorance of themselves that makes prayer little in request: Hunger best teaches men to beg. You would be oftener on your knees if you were oftener in your hearts. Prayer would not seem so needless if you knew your needs. Know yourselves, and be prayerless if you can.

The first rule of prayer is to have our heart and mind framed as becomes those who are entering into converse with God.
– John Calvin

The one concern of the devil is to keep the saints from prayer. He fears nothing from prayerless studies, prayerless work, prayerless religion. He laughs at our toil, mocks at our wisdom, but trembles when we pray.
– Samuel Chadwick

Thou art coming to a King, Large petitions with thee bring;
For His grace and power are such None can ever ask too much.
– John Newton